JPS5750181A - Multi-value dither coding system of video signal - Google Patents
Multi-value dither coding system of video signalInfo
- Publication number
- JPS5750181A JPS5750181A JP55125486A JP12548680A JPS5750181A JP S5750181 A JPS5750181 A JP S5750181A JP 55125486 A JP55125486 A JP 55125486A JP 12548680 A JP12548680 A JP 12548680A JP S5750181 A JPS5750181 A JP S5750181A
- Authority
- JP
- Japan
- Prior art keywords
- video signal
- threshold value
- signal
- coding
- value
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/90—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using coding techniques not provided for in groups H04N19/10-H04N19/85, e.g. fractals
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Details Of Television Systems (AREA)
- Analogue/Digital Conversion (AREA)
- Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
- Television Signal Processing For Recording (AREA)
Abstract
PURPOSE:To qufficiently assure the fidelity of a picture even with a coding by less number of euantizing bits, by coding a video signal through the use of multi-value dither method. CONSTITUTION:After clamping of DC level is made with a DC playback circuit DRG to a video signal V, the level value according to a split threshold value Sd is added with a signal indicating level value from a threshold value generating circuit SVG produced corresponding to dots of each scanning line, in accordance with synchronizing signals SYNC and with a video signal V at an adder AD, and the resultant, an addition signal Vd is given to an analog-to-digital converter A/D in 4- bit making coding based on the threshold value S, and the coded signal Vd is picked up from the output.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55125486A JPS5750181A (en) | 1980-09-10 | 1980-09-10 | Multi-value dither coding system of video signal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55125486A JPS5750181A (en) | 1980-09-10 | 1980-09-10 | Multi-value dither coding system of video signal |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5750181A true JPS5750181A (en) | 1982-03-24 |
Family
ID=14911276
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP55125486A Pending JPS5750181A (en) | 1980-09-10 | 1980-09-10 | Multi-value dither coding system of video signal |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5750181A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60169228A (en) * | 1984-02-13 | 1985-09-02 | Victor Co Of Japan Ltd | Ad conversion circuit |
US4543599A (en) * | 1983-05-25 | 1985-09-24 | Rca Corporation | Analog-to-digital conversion apparatus including double dither signal sources |
US4658501A (en) * | 1984-07-10 | 1987-04-21 | Mazda Motor Corporation | Automobile assembling apparatus |
US4734979A (en) * | 1985-12-25 | 1988-04-05 | Mazda Motor Corporation | Weighty object mounting systems |
JPH04212822A (en) * | 1990-01-29 | 1992-08-04 | Schade Kg | Manufacture of hollow injection molded product using plastic and device for putting this method into practice |
-
1980
- 1980-09-10 JP JP55125486A patent/JPS5750181A/en active Pending
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4543599A (en) * | 1983-05-25 | 1985-09-24 | Rca Corporation | Analog-to-digital conversion apparatus including double dither signal sources |
JPS60169228A (en) * | 1984-02-13 | 1985-09-02 | Victor Co Of Japan Ltd | Ad conversion circuit |
JPH0211182B2 (en) * | 1984-02-13 | 1990-03-13 | Victor Company Of Japan | |
US4658501A (en) * | 1984-07-10 | 1987-04-21 | Mazda Motor Corporation | Automobile assembling apparatus |
US4734979A (en) * | 1985-12-25 | 1988-04-05 | Mazda Motor Corporation | Weighty object mounting systems |
JPH04212822A (en) * | 1990-01-29 | 1992-08-04 | Schade Kg | Manufacture of hollow injection molded product using plastic and device for putting this method into practice |
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